A dosing device for adding a medicament from the outside of a cooling tower fence

Abstract

The utility model discloses a kind of dosing devices for adding reagent from the outside of cooling tower fence, belong to cooling tower dosing technical field, including transport trolley and receiving platform, receiving platform is used to receive reagent poured from transport trolley and guide it to cooling tower circulating pool, transport trolley includes frame body, bucket frame, fixed ring, inverted U type connecting frame and drive structure for driving bucket frame to pour, bucket frame is detachably installed in the inside of fixed ring, fixed ring is fixed on the upper end of frame body by drive structure, connecting frame is detachably connected to the outer circumferential side of fixed ring. Through the overall technical scheme of the dosing device, through mechanization, automation, flow guide optimization and structure stability design, eliminate spilling and pouring risk when manually pouring, dosing process is fast, accurate, reagent utilization rate is high, mobile trolley and automatic driving reduce labor intensity, adapt to on-site environment stable pouring and flow guide design ensure dosing consistency, support long-term stable operation of circulating water system.

Description

Technical Field

[0001] This utility model belongs to the field of chemical dosing for cooling water towers, specifically relating to a dosing device for adding chemicals from the outside of the cooling water tower enclosure. Background Technology

[0002] A cooling tower is a device that uses water as a circulating coolant to absorb heat from a system and release it into the atmosphere to lower the water temperature. Its cooling mechanism utilizes the heat exchange between water and air to generate steam. The steam evaporates and carries away heat, achieving heat dissipation through evaporation, convection, and radiation. This process dissipates waste heat generated in industrial processes or refrigeration and air conditioning systems, thereby lowering the water temperature and ensuring the normal operation of the system. The device is typically cylindrical.

[0003] The cooling tower circulating water system is an open system, making it easy for external dust and impurities to enter; during system operation, the cooling water continuously evaporates, leading to calcium loss. 2+ Mg 2+ As the concentration of sludge and impurities increases, scale forms on the inner walls of pipes, main unit coils, and cooling tower packing, reducing system efficiency and lifespan. Bacteria in the circulating water attach to metal surfaces and multiply; their metabolic products damage the protective oxide film on equipment, accelerating corrosion of pipes, heat exchangers, and other metal components, leading to leaks and shortened lifespan. Furthermore, the humid environment and sunlight conditions of the cooling tower easily promote algae growth. Excessive algae growth forms biological slime that adheres to packing, pipes, pump impellers, etc., increasing flow resistance, reducing heat exchange efficiency, and even clogging pipes and equipment, affecting normal system operation. Moreover, the death of bacteria, algae, and other microorganisms forms biological slime that adheres to equipment surfaces, not only affecting heat transfer efficiency (increasing thermal resistance) but also becoming a breeding ground for new microorganisms.

[0004] During continuous operation, chemical solutions need to be added to the cooling tower to ensure its normal operation or extend its service life. These solutions primarily function to inhibit scale growth, prevent corrosion, and control microbial growth, thereby maintaining water quality. Currently, scale inhibitors, corrosion inhibitors, bactericides, algaecides, and slime removers are added to the cooling tower's circulating water system for scale removal and sterilization. This manual addition is labor-intensive and affects the effectiveness of scale removal and sterilization. Furthermore, during the operation and maintenance of the cooling tower, the chemical addition operation is a crucial step in ensuring its cooling and water quality stability. Currently, most of the chemicals added are pre-prepared, pre-packaged containers. Adding the chemicals simply requires inserting them into the cooling tower from the side. However, due to the lack of a system platform and transport tools for the chemical containers, the outlet of the chemical container cannot be directly aligned with the inside of the circulating water tank when adding chemicals. Therefore, chemicals are easily spilled on the outside during pouring, posing safety hazards. Furthermore, the angle of the chemical container is difficult to control when tilting, affecting dosing efficiency and accuracy, and failing to meet the requirements for standardized and safe operation and maintenance. Therefore, there is an urgent need for a dosing device that allows chemicals to be added from the outside of the cooling tower enclosure. Utility Model Content

[0005] To overcome the problems of existing technologies where pesticides are easily spilled on the outside during tilting of the pesticide tank, and the tilting angle is difficult to control, affecting the efficiency and accuracy of pesticide addition, this utility model provides a pesticide addition device for adding pesticides from the outside of the cooling tower enclosure, as detailed below:

[0006] A dosing device for adding chemicals from the outside of a cooling tower enclosure includes a transport trolley and a receiving platform. The receiving platform is used to receive the chemicals poured from the transport trolley and guide them into the cooling tower's circulating water pool. The transport trolley includes a frame, a barrel rack, a fixing ring, an inverted U-shaped connecting frame, and a drive structure for driving the barrel rack to tilt. The barrel rack is detachably installed inside the fixing ring. The fixing ring is fixed to the upper end of the frame through the drive structure. The connecting frame is detachably connected to the outer periphery of the fixing ring.

[0007] Furthermore, the frame includes a chassis, handlebars, and wheels. The chassis includes a U-shaped bottom frame and a first support plate fixedly connected to the middle of the bottom frame. A second support plate is fixedly connected to the middle of the closed end of the bottom frame. The handlebars are fixedly connected to the closed end of the bottom frame. Wheels are installed at the four corners of the bottom of the bottom frame. The drive structure is fixedly connected to the edge of any end of the first support plate.

[0008] Furthermore, the drive structure includes a bracket, a motor, a worm gear, and a worm fixed to the first support plate. The worm gear is mounted on the inner side of the bracket via a rotating rod connected to the middle of the worm gear. The rotating rod is rotatably connected to the bracket via a bearing. One end of the rotating rod is rotatably connected to the inner side of the bracket, and the other end extends out of the bracket and is fixedly connected to the fixed ring. Both ends of the worm are mounted above the worm gear via support seats, and the worm is meshed with the worm gear. The support seats are fixedly connected to the bracket. One end of the worm extends out of the bracket and is fixedly connected to the output shaft of the motor. The motor is fixedly installed via a support frame, which is fixed to the bottom frame and / or the first support plate.

[0009] Furthermore, a connecting shaft is symmetrically fixed at the middle of the outer sides of both ends of the fixing ring and the end of the first support plate. A limit plate is provided at the free end of the connecting shaft, and the two free ends of the connecting frame are respectively sleeved on the outer side of the connecting shaft.

[0010] Furthermore, the end of the bucket frame away from the fixing ring is movably connected to the connecting frame via a fixing screw, and the fixing screw passes through the corresponding connecting holes on the bucket frame and the connecting frame.

[0011] Furthermore, at least one first connecting seat is fixedly provided on the side of the fixing ring facing the handlebar frame, and at least one second connecting seat is fixedly provided on the tube frame corresponding to the first connecting seat. A connecting rod is provided between the first connecting seats and between the second connecting seats. The two ends of the connecting rod are movably connected to the first connecting seat and the second connecting seat, respectively. A connecting ring is fixedly provided on the connecting frame, and a first damping telescopic rod is fixedly provided between the connecting ring and the second connecting seat. One end of the first damping telescopic rod is connected to the connecting ring, and the other end is connected to the second connecting seat.

[0012] Furthermore, an auxiliary rod is fixedly installed at the bottom of the handlebar frame, and a plurality of second damping telescopic rods are provided between the auxiliary rod and the fixed ring, with the two ends of the second damping telescopic rods being fixedly connected to the auxiliary rod and the fixed ring, respectively.

[0013] Furthermore, the barrel rack has a medicine barrel placement opening on the side facing the opening of the bottom frame. A reinforcing strap is provided at the upper end of the placement opening. One end of the reinforcing strap is hinged to the barrel rack, and the other end is connected to the barrel rack through a detachable connector.

[0014] Furthermore, the receiving platform includes a guide channel, a horizontal channel, and a support rod. The guide channel and the horizontal channel are integrally connected, and the height of the guide channel is higher than that of the horizontal channel, forming a slope that slopes from the guide channel to the horizontal channel. The horizontal channel can pass through the gap at the bottom of the cooling tower enclosure and extend into the cooling tower circulating water pool.

[0015] Furthermore, the width of the guide channel is configured to receive all the medicine poured from the medicine tank.

[0016] The beneficial effects of adopting the technical solution of this invention are as follows:

[0017] (1) This utility model uses a transport trolley and drive structure to realize the automatic tilting of the medicine tank, avoiding manual handling and dumping of heavy objects, significantly reducing the physical labor and operational risks of operators. It addresses the problems of easy spillage of medicine and difficulty in controlling the angle during manual dosing, eliminates the risk of tipping accidents caused by fence obstruction, improves dosing safety and reduces labor intensity. Through the design of the receiving platform, it ensures that the medicine flows accurately into the cooling tower circulating water pool after being poured from the tank, reducing medicine waste and environmental pollution, while improving dosing efficiency, overcoming the problem of medicine spillage caused by fence obstruction, ensuring that the medicine enters the circulating water pool, improving the accuracy and standardization of dosing, meeting the needs of water quality management, and realizing precise dosing and efficient flow guidance.

[0018] (2) The device is designed to be flexible, easy to move, position and operate quickly, adapt to different cooling tower fence structures, reduce the preparation time for dosing, provide an integrated solution to the problem of lack of platform and transfer tools, simplify the dosing process, adapt to the site environment, and enhance the ease of operation and adaptability; the drive structure and auxiliary components enable the stable and controllable tilting of the agent tank, avoid splashing or waste caused by excessively fast pouring of the agent, ensure the uniform and reliable dosing process, improve the problem of inaccurate angle control when manually tilting, improve the dosing efficiency and system reliability, and improve the tilting control accuracy and stability.

[0019] (3) By optimizing the structure, mechanical wear is reduced and the durability of the device is improved. At the same time, efficient chemical dosing helps maintain the water quality of the cooling water system, indirectly extending the life of the cooling tower equipment. By standardizing chemical dosing, the efficient operation of the cooling system is ensured, reducing equipment failures and downtime losses caused by water quality problems, extending the life of the device and reducing operation and maintenance costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a dosing device for adding chemicals from the outside of a cooling tower enclosure according to this utility model;

[0022] Figure 2 This is a schematic diagram of a transport trolley for adding medicines from the outside of a cooling tower fence according to this utility model.

[0023] Figure 3 This is a schematic diagram of the drive structure of a dosing device for adding chemicals from the outside of a cooling tower enclosure according to this utility model.

[0024] Figure 4 This is a schematic diagram of the structure of a dosing device transport trolley for adding medicine from the outside of the cooling tower fence, from another angle.

[0025] The components include: 1. Transport trolley; 2. Receiving platform; 3. Frame body; 4. Bucket rack; 5. Connecting frame; 6. Drive structure; 7. Fixing ring; 8. Underframe; 9. Handlebar frame; 10. Wheel; 11. Base frame; 12. First support plate; 13. Second support plate; 14. Bracket; 15. Motor; 16. Worm gear; 17. Worm; 18. Support frame; 19. Connecting shaft; 20. Fixing screw; 21. Connecting rod; 22. First damping telescopic rod; 23. Auxiliary rod; 24. Second damping telescopic rod; 25. Reinforcing strip. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] This embodiment, through its overall technical approach to the dosing device, eliminates the risks of spillage and tipping during manual pouring. The dosing process is fast and precise, with high reagent utilization. The mobile trolley and automatic drive reduce labor intensity, and the stable pouring and flow guidance design adapts to the site environment, ensuring consistent dosing and supporting the long-term stable operation of the circulating water system. The specific implementation method is as follows:

[0028] Reference Figures 1-4As shown, a dosing device for adding chemicals from the outside of a cooling tower enclosure includes a transport trolley 1 and a receiving platform 2. The receiving platform 2 is used to receive the chemicals poured from the transport trolley 1 and guide them into the cooling tower's circulating water pool. The receiving platform 2 is provided with a positioning structure that matches the tilting position of the transport trolley 1. The transport trolley 1 includes a frame 3, a barrel frame 4, a fixing ring 7, an inverted U-shaped connecting frame 5, and a driving structure 6 for driving the barrel frame 4 to tilt. The barrel frame 4 is detachably installed inside the fixing ring 7. The fixing ring 7 is fixed to the upper end of the frame 3 through the driving structure 6. The connecting frame 5 is detachably connected to the outer periphery of the fixing ring 7.

[0029] Here, the receiving platform 2 guides the pesticide into the circulating water tank, enabling remote pesticide application from outside the fence and avoiding the safety risks of manually climbing over the fence to dump the pesticide. The mechanized transport trolley 1 integrates a drive structure 6, enabling automatic tilting of the pesticide tanks, reducing labor intensity and eliminating the instability of manual handling and tilting. In addition, the tank frame 4 and the connecting frame 5 are detachable, facilitating maintenance and adaptation to different sizes of pesticide tanks, fundamentally solving the problems of pesticide spillage, operational safety hazards, and low dosing efficiency.

[0030] In a preferred embodiment, the frame body 3 includes a chassis 8, a handlebar frame 9, and wheels 10. The chassis 8 includes a U-shaped bottom frame 11 and a first support plate 12 fixedly connected to the middle of the bottom frame 11. A second support plate 13 is fixedly connected to the middle of the closed end of the first support plate 12. The handlebar frame 9 is fixedly connected to the closed end of the bottom frame 11. Wheels 10 are installed at the four corners of the bottom of the bottom frame 11. The drive structure 6 is fixedly connected to any edge of the first support plate 12.

[0031] Here, the U-shaped bottom frame 11 with double support plates enhances the frame's torsional rigidity and effectively prevents tipping when spilling medicine. The four-corner wheels 10 are designed to facilitate steering in narrow spaces, and the handlebar frame 9 provides convenient push-pull operation. In addition, the drive structure 6 is fixed to the edge of the support plate, reasonably distributing the center of gravity to ensure a smooth tipping action.

[0032] In a preferred embodiment, the drive structure 6 includes a bracket 14 fixed on the first support plate 12, a motor 15, a worm gear 16, and a worm 17. The worm gear 16 is mounted on the inner side of the bracket 14 via a rotating rod connected to the middle of the worm gear 16. The rotating rod is rotatably connected to the bracket 14 via a bearing. One end of the rotating rod is rotatably connected to the inner side of the bracket 14, and the other end extends out of the bracket 14 and is fixedly connected to the fixing ring 7. Both ends of the worm 17 are mounted above the worm gear 16 via support seats, and the worm 17 is meshed with the worm gear 16. The support seats are fixedly connected to the bracket 14. One end of the worm 17 extends out of the bracket 14 and is fixedly connected to the output shaft of the motor 15. The motor 15 is fixedly installed via a support frame 18, which is fixed to the bottom frame 11 and / or the first support plate 12.

[0033] Here, the worm gear 16 and worm 17 transmission have a self-locking characteristic, which can precisely control the tilt angle of the barrel frame 4 to prevent the medicine from being spilled due to excessive flow rate; and the motor 15 can rotate forward or reverse to drive the machine, replacing manual labor and reducing the intensity of operation; the support frame 18 fixes the motor 15 to ensure transmission stability. In addition, the worm 17 is located above the worm gear 16 to prevent the transmission mechanism from jamming or accidentally falling back, ensuring operational safety.

[0034] In a preferred embodiment, a connecting shaft 19 is symmetrically fixed at the middle of the outer sides of the two ends of the fixing ring 7 and the first support plate 12. Each free end of the connecting shaft 19 is provided with a limit plate, and the two free ends of the connecting frame 5 are respectively sleeved on the outer side of the connecting shaft 19.

[0035] Here, the connecting shaft 19 with a limiting plate enables the quick connection between the connecting frame 5 and the fixing ring 7, simplifying the equipment assembly process. The symmetrical design of the connecting shaft 19 distributes the force, avoids single-point stress concentration leading to deformation, and stabilizes the structure.

[0036] In a preferred embodiment, the end of the bucket frame 4 facing away from the fixing ring 7 is movably connected to the connecting frame 5 via a fixing screw 20, with the fixing screw 20 passing through the corresponding connecting holes on the bucket frame 4 and the connecting frame 5.

[0037] Here, the fixing screw 20 allows the barrel frame 4 to be finely adjusted in angle when tilting, which can adapt to the flow characteristics of agents with different viscosities. The screw is provided with a connecting hole to ensure that the agent barrel will not fall off the barrel frame 4 during tilting.

[0038] In a preferred embodiment, at least one first connecting seat is fixedly provided on the side of the fixing ring 7 facing the handlebar frame 9, and at least one second connecting seat is fixedly provided on the barrel frame 4 corresponding to the first connecting seat. A connecting rod 21 is provided between the first connecting seat and the second connecting seat, and the two ends of the connecting rod 21 are movably connected to the first connecting seat and the second connecting seat respectively. A connecting ring is fixedly provided on the connecting frame 5, and a first damping telescopic rod 22 is fixedly provided between the connecting ring and the second connecting seat. One end of the first damping telescopic rod 22 is connected to the connecting ring, and the other end is connected to the second connecting seat.

[0039] Here, the first damping telescopic rod 22 buffers the impact force when the tank frame 4 is tilted, preventing the medicine tank from shaking and causing spillage. The combination of connecting rod 21 and damping rod limits the unintended displacement of the tank frame 4, ensuring that the tilting trajectory is linear and controllable, and reducing vibration improves the accuracy of the medicine flowing into the water tank through the receiving platform 2.

[0040] In a preferred embodiment, an auxiliary rod 23 is fixedly installed at the bottom of the handlebar frame 9, and a plurality of second damping telescopic rods 24 are provided between the auxiliary rod 23 and the fixed ring 7, with the two ends of the second damping telescopic rods 24 being fixedly connected to the auxiliary rod 23 and the fixed ring 7 respectively.

[0041] Here, the second damping telescopic rod 24 connects the fixing ring 7 and the handlebar frame 9 to counteract the reciprocating vibrations generated during tipping and prevent the trolley from shifting. The auxiliary rod 23 provides an additional fulcrum, reducing the risk of the operator losing control due to trolley swaying.

[0042] In a preferred embodiment, the barrel rack 4 has a medicine barrel placement opening on the side facing the opening of the bottom frame 11. A reinforcing strap 25 is provided at the upper end of the placement opening. One end of the reinforcing strap 25 is hinged to the barrel rack 4, and the other end is connected to the barrel rack 4 through a detachable connector.

[0043] Here, the reinforcing strap 25, combined with a detachable connector, locks the medicine container in place, preventing it from sliding out of the placement opening when tipped over. Additionally, the hinged design accommodates different container diameters, simplifying the filling process.

[0044] In one preferred embodiment, the receiving platform 2 includes a guide channel, a horizontal channel, and a support rod. The guide channel and the horizontal channel are integrally connected, and the height of the guide channel is higher than that of the horizontal channel, forming a slope that slopes from the guide channel to the horizontal channel. The horizontal channel can pass through the gap at the bottom of the cooling tower enclosure and extend into the cooling tower circulating water pool.

[0045] Here, the sloping surface from the guide channel to the horizontal flow channel guides the chemicals into the pool at a uniform speed, completely solving the problem of spillage caused by the fence obstruction. The horizontal flow channel can extend into the pool through the gap at the bottom of the fence, achieving true outside-fence chemical application.

[0046] In a preferred embodiment, the width of the guide channel is configured to receive all the medicine poured from the medicine tank.

[0047] Here, the width of the guide channel is greater than the diameter of the tank opening, ensuring that all the reagent falls into the channel and preventing liquid splashing due to misalignment of the tank opening. The wide design is compatible with different tank types, improving the tolerance for errors in the dosing operation.

[0048] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A dosing device for adding chemicals from the outside of a cooling tower enclosure, characterized in that, The device includes a transport trolley (1) and a receiving platform (2). The receiving platform (2) is used to receive the medicine poured out from the transport trolley (1) and guide it into the cooling tower circulating water pool. The transport trolley (1) includes a frame body (3), a barrel rack (4), a fixing ring (7), an inverted U-shaped connecting frame (5), and a driving structure (6) for driving the barrel rack (4) to tilt. The barrel rack (4) is detachably installed inside the fixing ring (7). The fixing ring (7) is fixed to the upper end of the frame body (3) through the driving structure (6). The connecting frame (5) is detachably connected to the outer periphery of the fixing ring (7).

2. The dosing device for adding chemicals from the outside of a cooling tower enclosure according to claim 1, characterized in that, The frame (3) includes a chassis (8), handlebars (9) and wheels (10). The chassis (8) includes a U-shaped bottom frame (11) and a first support plate (12) fixedly connected to the middle of the bottom frame (11). The first support plate (12) is fixedly connected to the middle of the closed end of the bottom frame (11) by a second support plate (13). The handlebars (9) are fixedly connected to the closed end of the bottom frame (11). Wheels (10) are installed at the four corners of the bottom of the bottom frame (11). The drive structure (6) is fixedly connected to any edge of the first support plate (12).

3. A dosing device for adding chemicals from the outside of a cooling tower enclosure according to claim 2, characterized in that, The drive structure (6) includes a bracket (14) fixed on the first support plate (12), a motor (15), a worm gear (16), and a worm (17). The worm gear (16) is mounted on the inner side of the bracket (14) via a rotating rod connected to the middle of the worm gear (16). The rotating rod is rotatably connected to the bracket (14) via a bearing. One end of the rotating rod is rotatably connected to the inner side of the bracket (14), and the other end extends out of the bracket (14) and is fixedly connected to the fixing ring (7). The two ends of the worm (17) are mounted above the worm wheel (16) by a support seat, and the worm (17) is meshed with the worm wheel (16). The support seat is fixedly connected to the bracket (14). One end of the worm (17) extends out of the bracket (14) and is fixedly connected to the output shaft of the motor (15). The motor (15) is fixedly installed by a support frame (18), which is fixed to the bottom frame (11) and / or the first support plate (12).

4. A dosing device for adding chemicals from the outside of a cooling tower enclosure according to claim 2, characterized in that, The fixing ring (7) is symmetrically fixed with connecting shafts (19) at the middle of the outer sides of the two ends near the end of the first support plate (12). The free ends of the connecting shafts (19) are provided with limit plates. The two free ends of the connecting frame (5) are respectively sleeved on the outer side of the connecting shafts (19).

5. A dosing device for adding chemicals from the outside of a cooling tower enclosure according to claim 4, characterized in that, The end of the bucket frame (4) facing away from the fixing ring (7) is movably connected to the connecting frame (5) through a fixing screw (20), and the fixing screw (20) passes through the corresponding connecting holes on the bucket frame (4) and the connecting frame (5).

6. A dosing device for adding chemicals from the outside of a cooling tower enclosure according to claim 4, characterized in that, At least one first connecting seat is fixedly provided on the side of the fixing ring (7) facing the handlebar frame (9). At least one second connecting seat is fixedly provided on the barrel frame (4) corresponding to the first connecting seat. A connecting rod (21) is provided between the first connecting seat and between the second connecting seat. The two ends of the connecting rod (21) are movably connected to the first connecting seat and the second connecting seat, respectively. A connecting ring is fixedly provided on the connecting frame (5). A first damping telescopic rod (22) is fixedly provided between the connecting ring and the second connecting seat. One end of the first damping telescopic rod (22) is connected to the connecting ring, and the other end is connected to the second connecting seat.

7. A dosing device for adding chemicals from the outside of a cooling tower enclosure according to claim 6, characterized in that, An auxiliary rod (23) is fixedly installed at the bottom of the handlebar frame (9). A plurality of second damping telescopic rods (24) are provided between the auxiliary rod (23) and the fixed ring (7), and the two ends of the second damping telescopic rods (24) are fixedly connected to the auxiliary rod (23) and the fixed ring (7) respectively.

8. A dosing device for adding chemicals from the outside of a cooling tower enclosure according to claim 4, characterized in that, The barrel rack (4) has a medicine barrel placement opening on the side facing the opening direction of the bottom frame (11). A reinforcing strip (25) is provided at the upper end of the placement opening. One end of the reinforcing strip (25) is hinged to the barrel rack (4), and the other end is connected to the barrel rack (4) through a detachable connector.

9. A dosing device for adding chemicals from the outside of a cooling tower enclosure according to claim 4, characterized in that, The receiving platform (2) includes a guide channel, a horizontal channel and a support rod. The guide channel is integrally connected with the horizontal channel, and the height of the guide channel is higher than that of the horizontal channel, forming a slope that slopes from the guide channel to the horizontal channel. The horizontal channel can pass through the gap at the bottom of the cooling tower fence and extend into the cooling tower circulating water pool.

10. A dosing device for adding chemicals from the outside of a cooling tower enclosure according to claim 9, characterized in that, The width of the guide channel is configured to receive all the medicine poured from the medicine tank.

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